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Showing 1 to 18 of 18 for “"ultrasonic spray pyrolysis"”.
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Porous Materials Prepared by Ultrasonic Spray Pyrolysis
The second approach was used to prepare meso- and macroporous carbons. A variety of carbon morphologies were observed (as indicated by SEM and TEM). Analysis of the carbon precursors using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) suggests that the decomposition …
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Micro- and nanostructured materials via ultrasonic spray pyrolysis
… As a simple and industrially scalable technique, ultrasonic spray pyrolysis (USP) is a powerful synthetic tool especially for application-based materials due to the scalability of this technique and the environmentally friendly nature of many of the common precursors and templating methods. More …
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Microstructured materials synthesis via salt-assisted ultrasonic spray pyrolysis
… and complicated, multi-step procedures. Ultrasonic spray pyrolysis (USP) is an industrially-scalable technique that has been shown to yield relatively monodisperse sub-micron particles in a continuous process using inexpensive and, often, environmentally-friendly precursors. The …
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Metal oxide sorbents for carbon dioxide capture prepared by ultrasonic spray pyrolysis
… the results of CaO materials synthesized by ultrasonic spray pyrolysis (USP) are presented. It is shown that the morphology of USP-synthesized CaO sorbents can be easily controlled but that there is little difference between each sorbent in cyclic carbonation/calcination stability. Sorbents …
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Ultrasonic synthesis of materials for energy conversion devices
… materials with unique properties, while ultrasonic spray pyrolysis shows promising results for the mass production of the nanostructured materials. Therefore in this dissertation, synthesis of nanostructured materials by applying ultrasound for the better performing energy conversion and …
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Synthesis and characterisation of Titania thin films
… reporting TiO2 thin film fabrication by spray pyrolysis. A conceptual model of spray pyrolysis mechanism was developed and validated as a diagnostic tool to explain the deposition process, which shows that CVD can be achieved by this method. Effect of deposition temperature: TiO2 films …
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Calcium oxide-based sorbents for CO2 capture at high temperature
… synthetic approaches, mechanochemistry and ultrasonic spray pyrolysis (USP), were utilized to prepare highly stable CaOcontaining sorbents for CO2 capture. The mechanochemical approach is as an example of top-down synthesis of materials, while spray pyrolysis is considered a bottom-up …
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Understanding and enhancing multi-pollutant control using carbon-based materials
… Catalytic carbons were prepared via ultrasonic spray pyrolysis and potential applications for these materials were proposed. Next, activated carbons were tested as catalysts for NO oxidation and adsorbents for toxic industrial chemicals, including HCN. The research culminates by …
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Growth and characterisation of textured superconducting tapes
… stainless steel and Hastelloy C276 by the ultrasonic Spray Pyrolysis technique, using magnesium nitrate and magnesium acetate as precursors at many different conditions. Thermogravimetrical analysis (TGA) of the decomposition of the precursors was used as a guideline temperature for the …
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Development of Advanced Nanomaterials for Potential Lithium-Ion Battery Application
… lithium titanate (Li4Ti5O12). A scalable method, ultrasonic spray pyrolysis, was developed inhouse to produce NCNTs with tunable structure as potential anode materials. Further attempt to incorporate P element into CNTs was made, and it was successful when P and N elements were doped together. The …
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Functionalized silicone composites: omniphobic coatings, microspheres and plastic explosives
… 2 describes the successful fabrication of a sprayable omniphobic coating that contains a polydimethylsiloxane binder and nanoparticle ZnO. A coating, or any other surface, is considered omniphobic if it is both water-repellent (i.e. hydrophobic) and oil-repellant (i.e. oleophobic). The …
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Mechanochemistry of metal-organic frameworks under compression
… into a convenient aerosol process using an ultrasonic spray pyrolysis (USP) system to afford hierarchically structured ZIF-8 particles.
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Chemical and physical effects of ultrasound: sonoluminescence and materials
… organic solvents like THF, CHCl3, and DMF. Ultrasonic spray pyrolysis (USP) is used to prepare porous carbon spheres using energetic alkali propiolates as the carbon precursors. In this synthesis, metal salts are generated in situ, introducing porous structures into the carbon spheres. When …
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Silicone microspheres and disposable separation technology for gaseous analytes
… micron-sized silicone spheres prepared via ultrasonic spray pyrolysis (USP). Silicones are found in an amazing number of commercial products including cosmetics, sealants, adhesives, lubricants, medical devices, and even food. Despite the prevalence of bulk silicones in today’s society, the …
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Ultrasound-assisted synthesis and processing of carbon materials
… methods for controlling the porosity of carbons. Ultrasonic spray pyrolysis (USP) is an aerosol method suitable for large-scale, continuous synthesis of materials. Ultrasound is used to create aerosol droplets of a precursor solution which serve as micron-sized spherical reactors for materials …
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Control of micro- and nanostructure: I. polymer gas chromatography microcolumns and II. applications of ultrasound
… second part of this thesis concerns the use of ultrasonic nebulization of solutions and suspensions both to produce unique nanostructured materials and to aid the study of nanomaterials. The first chapter introduces GC and GC capillary microcolumns. A brief history of the development of GC is …
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Aerosol Synthesis of Energetic Materials
Item reinstated by Sarah Shreeves (sshreeve@illinois.edu) on 2013-01-22T11:00:17Z Item was in collections: University of Illinois Dissertations and Theses (ID: 204) Dissertations and Theses - Chemistry (ID: 676) No. of bitstreams: 2 Helmich_Richard.pdf: 10495587 bytes, checksum: …